10340021321 has 4 divisors (see below), whose sum is σ = 11817167232. Its totient is φ = 8862875412.

The previous prime is 10340021317. The next prime is 10340021339. The reversal of 10340021321 is 12312004301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10340021321 - 2² = 10340021317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10340021321.

It is not an unprimeable number, because it can be changed into a prime (10340021621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738572945 + ... + 738572958.

It is an arithmetic number, because the mean of its divisors is an integer number (2954291808).

Almost surely, 2^10340021321 is an apocalyptic number.

It is an amenable number.

10340021321 is a deficient number, since it is larger than the sum of its proper divisors (1477145911).

10340021321 is an equidigital number, since it uses as much as digits as its factorization.

10340021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477145910.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10340021321 its reverse (12312004301), we get a palindrome (22652025622).

The spelling of 10340021321 in words is "ten billion, three hundred forty million, twenty-one thousand, three hundred twenty-one".